content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable.internal.operators;
  
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.*;
  
  import org.junit.*;
  
  import io.reactivex.common.functions.Function;
  import io.reactivex.observable.*;
  import io.reactivex.observable.subjects.PublishSubject;
  
  public class ObservableSkipUntilTest {
      Observer<Object> observer;
  
      @Before
      public void before() {
          observer = TestHelper.mockObserver();
      }
  
      @Test
      public void normal1() {
          PublishSubject<Integer> source = PublishSubject.create();
          PublishSubject<Integer> other = PublishSubject.create();
  
          Observable<Integer> m = source.skipUntil(other);
          m.subscribe(observer);
  
          source.onNext(0);
          source.onNext(1);
  
          other.onNext(100);
  
          source.onNext(2);
          source.onNext(3);
          source.onNext(4);
          source.onComplete();
  
          verify(observer, never()).onError(any(Throwable.class));
          verify(observer, times(1)).onNext(2);
          verify(observer, times(1)).onNext(3);
          verify(observer, times(1)).onNext(4);
          verify(observer, times(1)).onComplete();
      }
  
      @Test
      public void otherNeverFires() {
          PublishSubject<Integer> source = PublishSubject.create();
  
          Observable<Integer> m = source.skipUntil(Observable.never());
  
          m.subscribe(observer);
  
          source.onNext(0);
          source.onNext(1);
          source.onNext(2);
          source.onNext(3);
          source.onNext(4);
          source.onComplete();
  
          verify(observer, never()).onError(any(Throwable.class));
          verify(observer, never()).onNext(any());
          verify(observer, times(1)).onComplete();
      }
  
      @Test
      public void otherEmpty() {
          PublishSubject<Integer> source = PublishSubject.create();
  
          Observable<Integer> m = source.skipUntil(Observable.empty());
  
          m.subscribe(observer);
  
          verify(observer, never()).onError(any(Throwable.class));
          verify(observer, never()).onNext(any());
          verify(observer, never()).onComplete();
      }
  
      @Test
      public void otherFiresAndCompletes() {
          PublishSubject<Integer> source = PublishSubject.create();
          PublishSubject<Integer> other = PublishSubject.create();
  
          Observable<Integer> m = source.skipUntil(other);
          m.subscribe(observer);
  
          source.onNext(0);
          source.onNext(1);
  
          other.onNext(100);
          other.onComplete();
  
          source.onNext(2);
          source.onNext(3);
          source.onNext(4);
          source.onComplete();
  
          verify(observer, never()).onError(any(Throwable.class));
          verify(observer, times(1)).onNext(2);
          verify(observer, times(1)).onNext(3);
          verify(observer, times(1)).onNext(4);
          verify(observer, times(1)).onComplete();
      }
  
      @Test
      public void sourceThrows() {
          PublishSubject<Integer> source = PublishSubject.create();
          PublishSubject<Integer> other = PublishSubject.create();
  
          Observable<Integer> m = source.skipUntil(other);
          m.subscribe(observer);
  
          source.onNext(0);
          source.onNext(1);
  
          other.onNext(100);
          other.onComplete();
  
          source.onNext(2);
          source.onError(new RuntimeException("Forced failure"));
  
          verify(observer, times(1)).onNext(2);
          verify(observer, times(1)).onError(any(Throwable.class));
          verify(observer, never()).onComplete();
      }
  
      @Test
      public void otherThrowsImmediately() {
          PublishSubject<Integer> source = PublishSubject.create();
          PublishSubject<Integer> other = PublishSubject.create();
  
          Observable<Integer> m = source.skipUntil(other);
          m.subscribe(observer);
  
          source.onNext(0);
          source.onNext(1);
  
          other.onError(new RuntimeException("Forced failure"));
  
          verify(observer, never()).onNext(any());
          verify(observer, times(1)).onError(any(Throwable.class));
          verify(observer, never()).onComplete();
      }
  
      @Test
      public void dispose() {
          TestHelper.checkDisposed(PublishSubject.create().skipUntil(PublishSubject.create()));
      }
  
      @Test
      public void doubleOnSubscribe() {
          TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, ObservableSource<Object>>() {
              @Override
              public ObservableSource<Object> apply(Observable<Object> o) throws Exception {
                  return o.skipUntil(Observable.never());
              }
          });
  
          TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, ObservableSource<Object>>() {
              @Override
              public ObservableSource<Object> apply(Observable<Object> o) throws Exception {
                  return Observable.never().skipUntil(o);
              }
          });
      }
  }
  